20548485 has 40 divisors (see below), whose sum is σ = 37243800. Its totient is φ = 10838016.

The previous prime is 20548459. The next prime is 20548487. The reversal of 20548485 is 58484502.

It can be written as a sum of positive squares in 4 ways, for example, as 54756 + 20493729 = 234^2 + 4527^2 .

It is not a de Polignac number, because 20548485 - 2⁹ = 20547973 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20548487) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 45541 + ... + 45989.

It is an arithmetic number, because the mean of its divisors is an integer number (931095).

Almost surely, 2^20548485 is an apocalyptic number.

It is an amenable number.

20548485 is a deficient number, since it is larger than the sum of its proper divisors (16695315).

20548485 is a wasteful number, since it uses less digits than its factorization.

20548485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579 (or 570 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 36.

The square root of 20548485 is about 4533.0436794719. The cubic root of 20548485 is about 273.9007801372.

The spelling of 20548485 in words is "twenty million, five hundred forty-eight thousand, four hundred eighty-five".